JP2000268626A - Luminaire mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire mounting device capable of preventing an unsatisfactory mechanical connection and a danger of the luminaire dropping. SOLUTION: In this luminaire mounting device, a iuminaire 8 is mechanically held by a hanging ceiling body 2 by locking the locking piece 5 of a holder 4 provided in the luminaire 8 to the locking stage 3 of the hanging ceiling body 2 installed on the ceiling surface 1, and the hanging ceiling body 2 is electrically connected to the luminaire 8 by a plug 6 connected to the lower surface connecting part 2a. The plug 6 is equipped with an engagement part 7 to lock the locking piece 5 to the locking stage 3 by its engagement with the holder 4 when the plug 4 is connected to the lower surface connecting part 2a while preventing a lock failure of the locking stage 3 and the locking piece 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture mounting device.

[0002]

2. Description of the Related Art Conventionally, in order to mount a luminaire on a ceiling, a luminaire is mounted on a hanging ceiling body mounted on a ceiling surface, or an adapter is electrically and mechanically connected to the hanging ceiling body. Lighting equipment was attached to the adapter.

[0003] The electrical connection between the lighting equipment and the adapter has a terminal portion that comes into direct contact with the mechanical connection between the lighting equipment and the adapter. A lead wire is connected to the adapter, and the lead wire is connected to the power supply terminal of the lighting equipment. And vice versa, connecting the lead wire from the lighting fixture to the output terminal of the adapter. Examples of adapter terminals include soldered terminals, quick-connect terminals, screw terminals, and connector terminals. However, these terminals make an electrical connection and do not have a mechanical holding function for holding the instrument.

The means for mechanically holding the luminaire on the adapter is provided by locking the adapter and the holder. The locking piece provided on the holder is provided at a locking step formed by a convex portion or a groove provided on the side surface of the adapter. It is locked. The reverse is also true in some cases.

[0005]

Normally, a pair of locking pieces are arranged opposite to the hooking sealing body, and their movements are independent of each other. Therefore, if the lighting fixture is installed in an inclined state, only one of the locking pieces may be in a locked state, and if the electrical connection is directly made by a connector or the like, the mechanical connection is interrupted. It may be used in an odd state.

As described above, when the switch is used in an incomplete state, the switch may be pulled or an impact such as an earthquake may cause a shock.
There was a risk that the lighting equipment would fall.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lighting fixture mounting apparatus capable of preventing a halfway mechanical connection and a danger of falling of the lighting fixture.

[0008]

According to a first aspect of the present invention, there is provided a lighting fixture mounting apparatus in which a locking piece of a holder provided in a lighting fixture is locked to a locking step of a hooking sealing body installed on a ceiling surface. A lighting fixture mounting device that mechanically holds the lighting fixture to the hooking sealing body and makes an electrical connection between the hooking sealing body and the lighting fixture by a plug connected to a lower surface connection portion of the hooking sealing body; When the plug is connected to the lower surface connecting portion, the plug is provided with an engaging portion that engages with the holder and locks the locking piece with the locking step. .

According to the lighting apparatus mounting apparatus of the first aspect, even if the engagement between the hooking sealing body and the holder is incomplete due to insufficient insertion of the lighting apparatus or the like, the engagement by the electrical connection operation of the plug is achieved. The joint part compensates for poor insertion of the holder, prevents poor locking between the locking step and the locking piece, and allows the holder to be completely locked to the hooking sealing body, so it is used in an incomplete mounting state There is no danger of falling without.

According to a second aspect of the present invention, there is provided a lighting fixture mounting device, wherein a holder provided on the lighting fixture is locked at a locking step of an adapter electrically and mechanically connected to a hanging sealing body installed on a ceiling surface. A lighting fixture mounting for mechanically holding the lighting fixture to the hooking sealing body by locking a piece and making an electrical connection between the hooking sealing body and the lighting fixture by a plug connected to a lower surface connection portion of the adapter. In the apparatus, when the plug is connected to the lower surface connecting portion, the plug is provided with an engaging portion that engages with the holder and locks the locking piece to the locking step. Things.

According to the lighting fixture mounting apparatus of the second aspect, the same effect as that of the first aspect is obtained.

According to a third aspect of the present invention, in the lighting fixture mounting apparatus according to the first or second aspect, the engagement portion is formed so that the plug has a length outside the radial direction of the hooking sealing body that is equal to or longer than the outer diameter of the hooking sealing body. And pushes up the holder when connecting the plug.

According to the lighting fixture mounting apparatus of the third aspect, in addition to the same effects as those of the first and second aspects, when the engaging portion of the plug pushes up the holder, the locking piece of the holder is damaged. However, since the holder can be received by the plug, it has a double safety structure against falling.

According to a fourth aspect of the present invention, in the lighting apparatus mounting apparatus according to the first, second or third aspect, the lighting apparatus is in contact with an edge portion of the plug to restrict rattling of the lighting apparatus in a horizontal direction. Are provided on the holder.

According to the lighting fixture mounting apparatus of the fourth aspect, in addition to the same effects as those of the first, second, or third aspect, the hooking sealing body and the holder are caused by dimensional variations of the hooking sealing body, heat shrinkage, and the like. Even if there is a gap between the lighting fixture and the plug, the horizontal position is regulated by the holder and the plug, so that it is possible to suppress the backlash of the lighting fixture and to prevent the lighting fixture from being shifted.

According to a fifth aspect of the present invention, there is provided the lighting fixture mounting apparatus according to the first, second or third aspect, wherein the holder is provided with an annular ridge having an arc-shaped cross section on a contact surface of the holder with the plug. It is.

According to the lighting fixture mounting apparatus of the fifth aspect, in addition to the same effects as those of the first, second, or third aspect, the contact between the holder and the engaging portion of the plug is a line contact. The frictional force is small and the plug can be easily mounted.

According to a sixth aspect of the present invention, in the lighting fixture mounting apparatus according to the second or third aspect, the adapter exposes a lock release button on a lower surface, and the plug is connected so that the lock release button is hidden. Is what it is.

According to the lighting fixture mounting apparatus of the sixth aspect, in addition to the same effects as those of the second or third aspect, when the adapter is used, the lock release button of the adapter is hidden when the plug is mounted. Therefore, there is no mistake in the order of removal operation, and there is no sudden drop during removal, which is safe.

According to a seventh aspect of the present invention, in the lighting fixture mounting apparatus according to the first, second, third, fourth, fifth, or sixth aspect, the locking piece has an unlocking operation part. The holder exposes the release operation portion on the lower surface, and the plug obstructs the operation of the release operation portion by connection.

According to the lighting fixture mounting apparatus of the seventh aspect, in addition to the effects similar to those of the first, second, third, fourth, fifth or sixth aspects, the lighting fixture mounting apparatus has a Since the release operation portion of the holder is hidden, the device cannot be removed unless the plug is first removed, so that the operation sequence of the removal is not mistaken and the device does not suddenly drop during removal and is safe.

In the lighting fixture mounting apparatus according to the eighth aspect, the locking piece is unlocked in any one of the first, second, third, fourth, fifth, sixth and seventh aspects. An operation unit, wherein the holder exposes the release operation unit on a lower surface,
The plug restricts the movement of the release operation unit by the connection.

According to the lighting fixture mounting apparatus of the eighth aspect, the same effect as the first, second, third, fourth, fifth, sixth or seventh aspect of the present invention is obtained. In addition, when the plug is attached, since the movement of the release operation portion of the holder is restricted, the locking piece does not move even when an external force such as an earthquake is applied, so that there is no danger of the locking being released and falling.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture mounting device locks the lighting fixture 8 by locking the locking piece 5 of the holder 4 provided on the lighting fixture 8 to the locking step 3 of the hanging ceiling body 2 installed on the ceiling surface 1. Hook ceiling body 2
The hooking ceiling body 2 and the lighting fixture 8 are electrically connected by a plug 6 connected to the lower surface connecting portion 2a of the hooking sealing body 2 mechanically.
In such a lighting fixture mounting device, in particular, the plug 6
Engages with the holder 4 when connecting to the lower surface connection portion 2a,
By locking the locking piece 5 to the locking step 3, the locking step 3
The plug 6 is provided with an engaging portion 7 for preventing a defective locking between the locking piece 5 and the locking piece 5.

The hooking sealing body 2 has a substantially cylindrical shape directly attached to the ceiling surface 1 and has a brim-like locking step 3 at its lower end.
Are formed, and the lower surface connecting portion 2a has a pair of arc-shaped connecting holes,
There is provided a hook (not shown) provided inside thereof for electrically and mechanically connecting the plug 6.

In the lighting fixture 8, as shown in FIG.
9 is an appliance body, 10 is a body cover, 11 is a ring-shaped lamp,
12 is a glove.

The holder 4 is, as shown in FIGS.
At the center, the holder body 13 is formed with a fitting hole 14 having a size large enough to be externally fitted to the hooking sealing body 2. On both sides of the fitting hole 14, notches 15 are formed in both the lower surface and the fitting hole 14. Then, the recess 15 is covered with a cover 16 to form a locking piece projecting opening 17 facing the fitting hole 14.
A lower surface opening 18 is formed in the cover 16. Recess 15
The locking piece 5 and a spring 20 using a coil spring are accommodated in the locking piece 5 and the locking claw 21 at the tip of the locking piece 5 is inserted into the locking piece projecting opening 1.
7 is urged forward and backward into the fitting hole 14 by a spring 20. The locking claw 21 forms a tapered surface on the upper surface side,
The locking of the hooking sealing body 2 to the locking step 3 is facilitated. The release operation part 22 is hung down on the locking piece 5 and protrudes downward through the lower surface opening 18 of the cover 16.

This holder 4 is attached to the central opening of the instrument body 9. When the fitting hole 14 of the holder 4 attached to the instrument body 9 is pushed up so as to be fitted to the hooking sealing body 2, the tapered surface of the locking claw 21 abuts on the lower side of the locking step 3 and resists the spring 20. And slide the locking step 3 to lock the locking claw 2
When the locking claw 21 moves over the locking step 3, the spring 20 is restored and the locking claw 21 is moved to the locking step 3 as shown in FIG.
On the upper side. As a result, the lighting fixture 8 is mechanically attached to the hooking sealing body 2.

On the other hand, when the luminaire 8 is to be removed from the hooking sealing body 2, when the release operation portion 22 of the locking piece 5 is slid against the spring 20 in a direction away from the fitting hole 14, the locking claw 21 is moved. The lighting fixture 8 can be detached from the locking step 3 and detached from the hanging ceiling body 2.

Next, the plug 6 is a rectangular parallelepiped that is long in one direction and has an inverted trapezoidal shape with both ends inclined. A hooking blade 6a inserted into a pair of arc-shaped connection holes of the lower surface connection portion 2a of the hooking sealing body 2 is protruded from the upper surface, and the hooking blade 6a is inserted into the connection hole and rotated to be hooked on a hooking tool, thereby being electrically operated. Connected mechanically and mechanically. The engagement portions 7 extend outward from the trapezoidal bottom (upper surface) side from both ends in the longitudinal direction so that the plug 6 has a length equal to or larger than the outer diameter of the hooking sealing body 2, and connects the plug 6. At this time, the holder 4 is pushed up. That is, as shown in FIG. 6, the relationship of length L of plug 6> outer diameter of hooking sealing body 2 is satisfied. Conventionally, the opposite is true, with the relationship of the length of the plug 6 <the outer diameter of the hooking sealing body. 6b is a lead wire of the plug 6.

FIG. 5 shows that one of the locking claws 21 of the holder 4 is locked to the locking step 3, and the other locking claw 21 is not locked to the locking step 3 yet, and the holder 4 is inclined. State. In such a state, when the lighting fixture 8 is mounted in an inclined state, one of the locking pieces 21 is locked first, and if the mounting operation is stopped halfway, the lighting fixture 8 may be held in a half-engaged state. There is. When the plug 6 is hooked on the lower surface connecting portion 2a of the hooking sealing body 2 in this state, the engaging portion 7 at the end of the plug 6 hits the holder 4 lowering, and the hooking blade 6a of the plug 6 remains in this state. Cannot be locked. FIG.
When the holder 4 is pushed up by the engaging portion 7 of the plug 6 or the tool body 8 is pushed up to the correct posture in the state described above, the hooking blade 6a of the plug 6 can be connected to the hooking tool.
At the mounting position of the plug 6 (the position where the plug end surface 6c and the sealing end surface 2c are in contact), the height of the locking step 3 of the hooking sealing body 2 and the height of the locking piece 5 of the holder 4 are equal.
1 is completely locked on the locking step 3.

FIG. 7 shows a case where the hooking sealing end face 2c and the holder face 4a have the same height. At this time, the distance A between the locking surface 21a of the locking piece 5 and the holder surface 4a in contact with the plug 6 is the plug end surface 6c in contact with the locking surface of the locking step 3 of the hooking sealing body 2 and the holder surface 4a.
Is equal to the distance B.

According to this embodiment, even if the locking between the hooking sealing body 2 and the holder 4 is incomplete due to insufficient mounting and insertion of the lighting fixture 8 and the like, the plug 6 can be engaged by the electrical connection operation. The joint 7 compensates for the poor insertion of the holder 4,
Since the holder 4 can be completely locked to the hooking sealing body 2, there is no danger of falling without being used in an incompletely mounted state. The engagement part 7 of the plug 6 is the holder 4
, The plug 6 can receive the holder 4 even if the locking piece 5 of the holder 4 is broken.
It has a double safety structure against falling.

A second embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture mounting device is provided with a locking step 30b of the adapter 30 electrically and mechanically connected to the hanging ceiling body 2 installed on the ceiling surface 1.
In addition, the locking piece 5 of the holder 4 provided on the lighting fixture 8 is locked to mechanically hold the lighting fixture 8 on the hooking sealing body 2. In this embodiment, the hooking sealing body 2 is not provided with the locking step 30b, and the other configuration is the same as that of the first embodiment.

The adapter 30 includes the hooking sealing body 2
A hooking blade 30a connected to the lower surface connecting portion 2a is provided on the upper surface, a locking step 30b for locking the locking piece 5 is provided on the peripheral surface, and the lower surface connecting portion 2 is hooked on the lower surface with the hooking blade 6a of the plug 6.
A connection portion 30c having the same configuration as that of FIG.

The operation, operation and effect of the second embodiment are the same as those of the first embodiment.

FIG. 10 shows a third embodiment of the present invention. That is, in this lighting fixture mounting apparatus, the hooking sealing end face 2c and the holder face 4a are stepped in a state where the locking piece 5 is locked on the locking step 3, and in particular, the hooking sealing end face 2
This is the case where the holder surface 4a side is recessed toward the ceiling side than c. In this case, the engaging portion 7 of the plug 6 is formed so as to protrude upward, the tip of the engaging portion 7 abuts the holder surface 4a, pushes up the holder 4, and the locking piece 5 is locked to the locking step 3. Sometimes, the catching blade 6a of the plug 6 is connected to the lower surface connection portion 2a.

The rest is the same as the first embodiment or the second embodiment.

FIG. 11 and FIG. 12 show a fourth embodiment of the present invention. That is, this lighting fixture mounting device,
The hooking sealing end face 2c and the holder face 4a are stepped, and in particular, the holder face 4a is higher than the hooking sealing end face 2c.
This is the case where the side protrudes to the floor side. In this case, the engagement portion 7 of the plug 6 is formed in a notch shape, and the holder 4 is pushed up at the notch portion of the engagement portion 7 so that the plug 6 is hooked when the engagement piece 6 is engaged with the engagement step 3. The blade 6a is connected to the lower surface connecting portion 2a.

The rest is the same as the first embodiment or the second embodiment.

FIGS. 13 to 15 show a fifth embodiment of the present invention. That is, in this lighting fixture mounting device, the holder 4 is provided with the locking step 33 for contacting the edge of the plug 6 to restrict the rattling of the lighting fixture 8 in the horizontal direction. In the embodiment, the engagement step 33 is formed in a cylindrical shape over the cover 16 on the lower surface of the holder 4 so as to guide the plug 6. Others are the same as the first embodiment or the second embodiment.

According to this embodiment, the dimensional variation and thermal shrinkage of the hooking sealing body 2 (the hooking sealing body 2 shrinks greatly because a thermosetting resin is usually used).
When a gap is opened between the hooking sealing body 2 and the holder 4 due to, for example, the holder 4, that is, the lighting fixture 8 rattles in the horizontal direction, but the diameter of the hooking sealing body 2 is guided because the plug 6 is guided by the locking step 33. Regardless of
Since the position in the horizontal direction is regulated by the holder 4 and the plug 6, rattling can be suppressed and there is no one-sided state.

Further, since the engaging portion 7 does not come off by engaging with the lower surface of the holder 4, there is no danger of dropping the device.

FIGS. 16 to 18 show a sixth embodiment of the present invention. In other words, this lighting fixture mounting device is provided with an annular ridge 34 having an arc-shaped cross section, for example, an R curve on the contact surface of the holder 4 with the plug 6.

According to this embodiment, since the contact between the holder 4 and the engaging portion 7 of the plug 6 is in linear contact, the frictional force is small and the plug 6 can be easily mounted.

The rest is the same as the first embodiment, the second embodiment, and the other embodiments.

FIGS. 19 and 20 show a seventh embodiment of the present invention. That is, in this lighting fixture mounting apparatus, the adapter 30 exposes the lock release button 36 on the lower surface, and the lock release button 36 is hidden by the plug 6 when the plug 6 is connected to the lower surface connection portion 30c of the adapter 30. ing. The lock release button 36 is used to retreat a lock pin 37 protruding from the upper surface of the adapter 30 by a spring (not shown), and is exposed on the lower surface so that the lock pin 37 can be operated from the lower surface of the adapter 30. The lock pin 37 is shown in FIG.
As shown in the figure, the protrusion protrudes near one of the hooking blades 30a and is inserted into the hooking blade insertion position at the end of the arc-shaped connection hole of the lower surface connecting portion 2a of the hooking sealing body 2 to prevent the adapter 30 from rotating in the direction in which the adapter 30 comes off. This prevents the adapter 30 from being accidentally detached. The unlock button 36 is plug 6
The hooking blade 6a is inserted into the lower surface connecting portion 2a of the adapter 30 and is positioned so as to be hidden when rotated.

According to the seventh embodiment, the adapter 30
When using the plug, the plug 3
Since the lock release button 36 of 0 is hidden, there is no mistake in the removal operation sequence, and there is no sudden drop during removal, which is safe.

The other parts are the same as in the second embodiment.

FIG. 21 and FIG. 22 show an eighth embodiment of the present invention. That is, this lighting fixture mounting device,
In the seventh embodiment, the plug 6 is formed in a disk shape to conceal the entire adapter 30 in a state of being connected to the adapter 30.

The other points are the same as in the seventh embodiment.

FIG. 23 and FIG. 24 show a ninth embodiment of the present invention. That is, this lighting fixture mounting device,
The holder 4 exposes the release operation portion 22 of the locking piece 5 on the lower surface,
The plug 6 is configured to obstruct the operation of the release operation unit 22 by the connection.

In the embodiment, the plug 6 is formed in a disk shape, and the operation surface is provided outside the engagement portion 7 so as to cover the operation surface of the release operation portion 22 so that a finger of a human hand does not fall on the operation surface. The cover 39 extends and is tapered along the surface of the release operation unit 22.

The other points are the same as those of the first or second embodiment.

According to this embodiment, in the state where the plug 6 is attached, the finger cannot be applied to the release operation portion 72 of the locking piece 5 of the holder 4 so that the release cannot be performed. Release) can be prevented.

FIG. 25 and FIG. 26 show a tenth embodiment of the present invention. That is, in the luminaire mounting apparatus according to the ninth embodiment, the release operation section 22 is provided by providing a flange projecting outward from the operation surface cover section 39 of the plug 6.
And a release operation unit cover 40 that covers the lower surface of the cover. When the plug 6 is connected to the hooking sealing body 2, the release operation cannot be performed because the release operation portion 22 of the holder 4 is not visible.

The other points are the same as in the ninth embodiment.

FIG. 27 and FIG. 28 show an eleventh embodiment of the present invention. That is, in this lighting fixture mounting apparatus, the holder 4 exposes the release operation portion 22 of the locking piece 5 on the lower surface, and the plug 6 is provided with the restriction portion 44 for restricting the movement of the release operation portion 22 by the connection. is there.

The restricting portion 44 of the embodiment is provided with a rib having a cross-sectional shape on the outer periphery of the disk-shaped plug 6, and is provided at the lower end of the release operation portion 22 with the plug 6 connected to the hooking sealing body 2. Is hooked.

Therefore, when the plug 6 is attached to the hooking sealing body 2, the restricting portion 44 provided on the plug 6 restricts the movement of the locking piece 5 of the holder 4 in the releasing direction of the releasing operation portion 22. The piece 5 can be prevented from coming off due to a lateral force, for example, attachment to an inclined ceiling or an earthquake.

When the plug 6 is formed in a disk shape, the plug 6 covers the entire circumference of the gap between the hooking sealing body 2 and the holder 4, thereby providing an insect repellent effect. Also, since the plug 6 and the release operation portion 22 of the locking piece 5 are fitted in a concave and convex manner, the locking piece 5
Since the plug 6 is not attached to the hooking sealing body 2 at an intermediate position where is not completely fitted, incomplete fitting can be prevented.

In the ninth to eleventh embodiments, the mounting angle between the hooking sealing body 2 and the holder 4 is limited by a convex or concave rib or the like. It is possible to prevent the operation of the release operation unit 22 while the plug 6 is connected.

The embodiment in which the plug 6 is directly connected to the hooking sealing body 2 is also applicable to the case where the plug 6 is connected to the adapter 30.

Further, in the present invention, the locking step 3 is not limited to the structure protruding convexly, but may be a circumferential groove formed concavely.

The above embodiments can be combined with each other as far as possible.

[0066]

According to the lighting apparatus mounting apparatus of the first aspect, even if the locking between the hooking sealing body and the holder is incomplete due to insufficient mounting of the lighting apparatus or the like, the electrical connection of the plug is achieved. Since the insertion of the holder can be compensated for by the operation of the engaging part, the improper engagement between the engaging step and the engaging piece can be prevented, and the holder can be completely engaged with the hooking sealing body. There is no danger of falling without being used.

According to the lighting fixture mounting apparatus of the second aspect, the same effect as that of the first aspect is obtained.

According to the lighting fixture mounting apparatus of the third aspect, in addition to the same effects as those of the first or second aspect, since the engaging portion of the plug pushes up the holder, the locking piece of the holder is damaged. However, since the holder can be received by the plug, it has a double safety structure against falling.

According to the lighting fixture mounting device of the fourth aspect, in addition to the same effects as those of the first, second, or third aspect, the hooking sealing body and the holder are caused by dimensional variation of the hooking sealing body, heat shrinkage, and the like. Even if there is a gap between the lighting device and the plug, the horizontal position is regulated by the holder and the plug, so that it is possible to suppress rattling of the lighting apparatus and prevent the lighting apparatus from being in a one-sided state.

According to the lighting fixture mounting apparatus of the fifth aspect, in addition to the same effects as those of the first, second, or third aspect, the contact between the holder and the plug is a line contact, so that the frictional force is small. Easy installation of plug.

According to the lighting fixture mounting apparatus of the sixth aspect, in addition to the same effects as those of the second or third aspect, when the adapter is used, the lock release button of the adapter is hidden when the plug is mounted. Therefore, there is no mistake in the order of removal operation, and there is no sudden drop during removal, which is safe.

According to the lighting fixture mounting apparatus of the seventh aspect, in addition to the same effects as those of the first, second, third, fourth, fifth and sixth aspects, in the plug mounting state, Since the release operation portion of the holder is hidden, the device cannot be removed unless the plug is first removed, so that the operation sequence of the removal is not mistaken and the device does not suddenly drop during removal and is safe.

According to the lighting fixture mounting apparatus of the eighth aspect, the same effects as those of the first, second, third, fourth, fifth, sixth or seventh aspects are provided. In addition, when the plug is attached, since the movement of the release operation portion of the holder is restricted, the locking piece does not move even when an external force such as an earthquake is applied, so that there is no danger of the locking being released and falling.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a first embodiment of the present invention.

FIG. 2 is an overall exploded perspective view.

FIG. 3 is a perspective view before a connection between a holder and a plug.

FIG. 4 is an exploded perspective view of the holder.

FIG. 5 is a cross-sectional view showing a state where only one locking piece of the holder is locked.

FIG. 6 is a bottom view of the connection state of the holder and the plug.

FIG. 7 is a partial cross-sectional view showing a positional relationship between a locking piece, a locking step, and an engaging portion.

FIG. 8 is an overall exploded perspective view of the second embodiment.

FIG. 9 is an exploded perspective view before connection of an adapter, a holder, and a plug.

FIG. 10 is a sectional view of a locked state according to the third embodiment.

FIG. 11 is a sectional view of a locked state according to a fourth embodiment.

FIG. 12 is a partial cross-sectional view showing the positional relationship between the locking piece, the locking step, and the engaging portion.

FIG. 13 is a sectional view of a locked state according to the fifth embodiment.

FIG. 14 is a bottom view of the connection state of the holder and the plug.

FIG. 15 is an exploded perspective view of a holder and a plug before connection.

FIG. 16 is a bottom view of the connection state of the holder and the plug according to the sixth embodiment.

FIG. 17 is a cross-sectional view of the locked state.

FIG. 18 is a partially enlarged view of FIG.

FIG. 19 is a bottom view of the connection state of the holder and the plug according to the seventh embodiment.

FIG. 20 is a perspective view of the adapter.

FIG. 21 is an exploded perspective view of a holder and a plug according to an eighth embodiment before connection.

FIG. 22 is a bottom view of the connection state.

FIG. 23 is a cross-sectional view of the ninth embodiment in a locked state.

FIG. 24 is an exploded perspective view before connection of a holder and a plug.

FIG. 25 is a sectional view of a tenth embodiment in a locked state.

FIG. 26 is an exploded perspective view before connection of a holder and a plug.

FIG. 27 is a sectional view of an eleventh embodiment in a locked state.

FIG. 28 is an exploded perspective view before connection of a holder and a plug.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ceiling surface 2 Hanging sealing body 2a Lower surface connection part 3 Locking step 4 Holder 5 Locking piece 6 Plug 6a Locking blade 7 Engaging part 8 Lighting equipment 21 Locking claw 22 Release operation part 30b Locking step 33 Locking step 34 Protrusion 36 Lock release button 44 Regulator

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yosuke Masaki 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Dai 2856, Shiratsukacho, Tsu City, Mie Prefecture Asahi Denki Kogyo Co., Ltd. 72) Inventor Ken Imai 1-55 Yoshida Shimojima, Higashi-Osaka City, Osaka Asahi National Lighting Co., Ltd. (72) Inventor Satoshi Yajima 1-55 Yoshida Shimojima, Higashi-Osaka City, Osaka Asahi National Lighting Co., Ltd.

Claims (8)

[Claims] 1. A locking step of a hanging ceiling body installed on a ceiling surface, wherein a locking piece of a holder provided on a lighting fixture is locked to mechanically hold the lighting fixture on the hooking sealing body. A lighting fixture mounting device for electrically connecting the hooking sealing body and the lighting fixture by a plug connected to a lower surface connecting portion of the hooking sealing body, wherein the plug is connected to the lower surface connecting portion with the holder. The lighting fixture mounting device, wherein the plug is provided with an engaging portion that engages to lock the locking piece to the locking step. 2. An engaging step of an adapter electrically and mechanically connected to a hooking sealing body installed on a ceiling surface,
Locking the locking piece of the holder provided in the lighting fixture to mechanically hold the lighting fixture to the hooking sealing body,
In a lighting fixture mounting apparatus for electrically connecting the hooking sealing body and the lighting fixture by a plug connected to a lower connection part of the adapter, the lighting fixture is engaged with the holder when the plug is connected to the lower connection part. The lighting fixture mounting device, wherein an engaging portion for locking the locking piece to the locking step is provided on the plug. 3. The engaging portion is extended radially outward such that the plug has a length equal to or longer than the outer diameter of the hooking sealing body, and pushes up the holder when connecting the plug. The lighting fixture mounting device according to claim 1 or 2. 4. A locking step for contacting an edge of the plug to restrict rattling of the lighting fixture in a horizontal direction,
4. The method according to claim 1, wherein said holder is provided on said holder.
The lighting fixture mounting device according to the above. 5. The lighting fixture mounting device according to claim 1, wherein an annular ridge having an arc-shaped cross section is provided on a contact surface of the holder with the plug. 6. The lighting fixture mounting device according to claim 2, wherein the adapter exposes a lock release button on a lower surface, and the plug allows the lock release button to be hidden in a connected state. 7. The locking piece has an unlocking operation portion, the holder exposes the release operation portion on the lower surface, and the plug obstructs operation of the release operation portion by connection thereof. The lighting fixture mounting device according to claim 2, claim 3, claim 4, claim 5, or claim 6. 8. The locking piece has an unlocking operation portion, the holder exposes the release operation portion on the lower surface, and the plug restricts movement of the release operation portion by connection thereof. The lighting fixture mounting device according to claim 2, claim 3, claim 4, claim 5, claim 6, or claim 7.